Aetertek At-215 Professional 2 in 1 Dog Training Collar with Remote 600yard Range Electric Shock Collar Vibrate for Smart Sport / Hunting Dogs Corrective shock or vibration can be used for one dogs or two dogs; Strong vibration to get any dog's attention ,remote with auto sleep feature ,save battery Rechargeable water-resistant receiver collar with long and short prongs for all coat types Range of up to 600 yards (approx. 550 meters) and signal can pass through obstacles, such as walls and fences 1 Year manufacturer warranty